/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:54:14,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:54:14,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:54:14,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:54:14,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:54:14,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:54:14,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:54:14,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:54:14,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:54:14,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:54:14,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:54:14,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:54:14,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:54:14,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:54:14,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:54:14,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:54:14,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:54:14,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:54:14,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:54:14,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:54:14,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:54:14,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:54:14,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:54:14,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:54:14,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:54:14,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:54:14,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:54:14,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:54:14,686 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 14:54:14,733 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:54:14,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:54:14,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:54:14,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:54:14,735 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:54:14,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:54:14,736 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:54:14,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:54:14,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:54:14,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:54:14,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:54:14,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:54:14,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:54:14,737 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:54:14,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:54:14,737 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:54:14,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:54:14,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:54:14,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:54:14,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:54:14,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:54:14,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:54:14,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:54:14,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:54:14,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:54:14,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:54:14,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:54:14,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:54:14,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:54:14,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:54:15,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:54:15,228 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:54:15,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:54:15,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:54:15,235 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:54:15,237 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2020-09-24 14:54:15,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/147d2f364/3fdc9faed01842d3b9a01fa65b51b6a4/FLAG5488c2963 [2020-09-24 14:54:15,916 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:54:15,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2020-09-24 14:54:15,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/147d2f364/3fdc9faed01842d3b9a01fa65b51b6a4/FLAG5488c2963 [2020-09-24 14:54:16,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/147d2f364/3fdc9faed01842d3b9a01fa65b51b6a4 [2020-09-24 14:54:16,245 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:54:16,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:54:16,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:16,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:54:16,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:54:16,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:16" (1/1) ... [2020-09-24 14:54:16,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1855c216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16, skipping insertion in model container [2020-09-24 14:54:16,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:16" (1/1) ... [2020-09-24 14:54:16,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:54:16,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:54:16,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:16,548 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:54:16,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:16,608 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:54:16,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16 WrapperNode [2020-09-24 14:54:16,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:16,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:54:16,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:54:16,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:54:16,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (1/1) ... [2020-09-24 14:54:16,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (1/1) ... [2020-09-24 14:54:16,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (1/1) ... [2020-09-24 14:54:16,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (1/1) ... [2020-09-24 14:54:16,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (1/1) ... [2020-09-24 14:54:16,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (1/1) ... [2020-09-24 14:54:16,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (1/1) ... [2020-09-24 14:54:16,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:54:16,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:54:16,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:54:16,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:54:16,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:54:16,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:54:16,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:54:16,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-09-24 14:54:16,819 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-09-24 14:54:16,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-24 14:54:16,819 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:54:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:54:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-09-24 14:54:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:54:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 14:54:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:54:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:54:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-09-24 14:54:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-24 14:54:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:54:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:54:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:54:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 14:54:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:54:17,253 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:54:17,254 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 14:54:17,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:17 BoogieIcfgContainer [2020-09-24 14:54:17,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:54:17,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:54:17,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:54:17,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:54:17,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:54:16" (1/3) ... [2020-09-24 14:54:17,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495aa742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:17, skipping insertion in model container [2020-09-24 14:54:17,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:16" (2/3) ... [2020-09-24 14:54:17,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495aa742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:17, skipping insertion in model container [2020-09-24 14:54:17,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:17" (3/3) ... [2020-09-24 14:54:17,269 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2020-09-24 14:54:17,281 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:54:17,292 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:54:17,313 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:54:17,343 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:54:17,343 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:54:17,343 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:54:17,343 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:54:17,344 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:54:17,344 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:54:17,344 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:54:17,344 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:54:17,367 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-09-24 14:54:17,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 14:54:17,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:17,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:54:17,377 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:17,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:17,385 INFO L82 PathProgramCache]: Analyzing trace with hash 2131665852, now seen corresponding path program 1 times [2020-09-24 14:54:17,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:17,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236800773] [2020-09-24 14:54:17,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:17,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:54:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:17,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 14:54:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:17,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:54:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:54:17,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236800773] [2020-09-24 14:54:17,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:54:17,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:54:17,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872226748] [2020-09-24 14:54:17,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:54:17,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:54:17,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:54:17,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:54:17,718 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-09-24 14:54:18,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:54:18,007 INFO L93 Difference]: Finished difference Result 164 states and 192 transitions. [2020-09-24 14:54:18,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:54:18,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-24 14:54:18,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:54:18,024 INFO L225 Difference]: With dead ends: 164 [2020-09-24 14:54:18,024 INFO L226 Difference]: Without dead ends: 81 [2020-09-24 14:54:18,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:54:18,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-24 14:54:18,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-24 14:54:18,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-24 14:54:18,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2020-09-24 14:54:18,097 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 34 [2020-09-24 14:54:18,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:54:18,098 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2020-09-24 14:54:18,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:54:18,098 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2020-09-24 14:54:18,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 14:54:18,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:18,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:54:18,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:54:18,103 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:18,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:18,103 INFO L82 PathProgramCache]: Analyzing trace with hash -630897281, now seen corresponding path program 1 times [2020-09-24 14:54:18,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:18,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419313978] [2020-09-24 14:54:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:54:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 14:54:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:54:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:54:18,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419313978] [2020-09-24 14:54:18,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:54:18,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:54:18,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413068964] [2020-09-24 14:54:18,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:54:18,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:54:18,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:54:18,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:54:18,385 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 6 states. [2020-09-24 14:54:18,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:54:18,672 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-09-24 14:54:18,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:54:18,673 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-09-24 14:54:18,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:54:18,678 INFO L225 Difference]: With dead ends: 117 [2020-09-24 14:54:18,678 INFO L226 Difference]: Without dead ends: 86 [2020-09-24 14:54:18,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:54:18,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-24 14:54:18,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-09-24 14:54:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 14:54:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-24 14:54:18,696 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 43 [2020-09-24 14:54:18,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:54:18,697 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-24 14:54:18,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:54:18,697 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-24 14:54:18,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 14:54:18,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:18,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:54:18,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:54:18,700 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:18,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:18,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1681903777, now seen corresponding path program 1 times [2020-09-24 14:54:18,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:18,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598057910] [2020-09-24 14:54:18,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:54:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 14:54:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:54:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:18,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:54:18,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598057910] [2020-09-24 14:54:18,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:54:18,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:54:18,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145052550] [2020-09-24 14:54:18,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:54:18,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:54:18,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:54:18,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:54:18,863 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states. [2020-09-24 14:54:19,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:54:19,073 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2020-09-24 14:54:19,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:54:19,074 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-09-24 14:54:19,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:54:19,076 INFO L225 Difference]: With dead ends: 121 [2020-09-24 14:54:19,076 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 14:54:19,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:54:19,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 14:54:19,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2020-09-24 14:54:19,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 14:54:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-24 14:54:19,089 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 46 [2020-09-24 14:54:19,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:54:19,090 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-24 14:54:19,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:54:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-24 14:54:19,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 14:54:19,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:19,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:54:19,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:54:19,093 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:19,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:19,093 INFO L82 PathProgramCache]: Analyzing trace with hash -969429089, now seen corresponding path program 1 times [2020-09-24 14:54:19,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:19,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812662521] [2020-09-24 14:54:19,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:54:19,122 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:54:19,122 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:54:19,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:54:19,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:54:19 BoogieIcfgContainer [2020-09-24 14:54:19,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:54:19,166 INFO L168 Benchmark]: Toolchain (without parser) took 2914.48 ms. Allocated memory was 145.8 MB in the beginning and 234.4 MB in the end (delta: 88.6 MB). Free memory was 102.4 MB in the beginning and 129.1 MB in the end (delta: -26.6 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:19,167 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 14:54:19,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.26 ms. Allocated memory is still 145.8 MB. Free memory was 101.8 MB in the beginning and 90.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:19,171 INFO L168 Benchmark]: Boogie Preprocessor took 131.20 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 90.9 MB in the beginning and 178.9 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:19,172 INFO L168 Benchmark]: RCFGBuilder took 518.33 ms. Allocated memory is still 201.9 MB. Free memory was 178.9 MB in the beginning and 155.8 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:19,180 INFO L168 Benchmark]: TraceAbstraction took 1898.79 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 155.1 MB in the beginning and 129.1 MB in the end (delta: 26.0 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:19,190 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 356.26 ms. Allocated memory is still 145.8 MB. Free memory was 101.8 MB in the beginning and 90.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.20 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 90.9 MB in the beginning and 178.9 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 518.33 ms. Allocated memory is still 201.9 MB. Free memory was 178.9 MB in the beginning and 155.8 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1898.79 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 155.1 MB in the beginning and 129.1 MB in the end (delta: 26.0 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72. Possible FailurePath: [L72] float x = -0.0f; [L73] float y = 0.0f; [L75] CALL, EXPR fmax_float(x, y) [L43] CALL, EXPR __fpclassify_float(x) [L20] __uint32_t w; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; [L43] RET, EXPR __fpclassify_float(x) [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; [L75] RET, EXPR fmax_float(x, y) [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 267 SDtfs, 53 SDslu, 494 SDs, 0 SdLazy, 352 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 9534 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...